Home / 22,260.85-30,719.99-12,189.35

Finding the Fourth Proportional to 22,260.85, 30,719.99 and 12,189.35

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Solution

The fourth proportional to 22,260.85, 30,719.99 and 12,189.35 is: 16,821.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,260.85 : 30,719.99 = 12,189.35 : x
  2. Step 2: Convert to fraction form
    22,260.85/30,719.99 = 12,189.35/x
  3. Step 3: Cross multiply
    22,260.85x = 30,719.99 × 12,189.35
  4. Step 4: Simplify right side
    22,260.85x = 374,456,817.38
  5. Step 5: Solve for x
    x = 374,456,817.38/22,260.85
  6. Step 6: Final answer
    x = 16,821.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.